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    1: --TEST--
    2: Bug #21478 (Zend/zend_alloc.c :: shutdown_memory_manager produces segfault) 
    3: --SKIPIF--
    4: <?php 
    5: 	if (version_compare(zend_version(), '2.0.0-dev', '<')) die('skip ZendEngine 2 is needed'); 
    6: 	if (!function_exists('stream_filter_register')) die('skip stream_filter_register() not available');
    7: ?>
    8: --FILE--
    9: <?php
   10: class debugfilter extends php_user_filter {
   11:   function filter($in, $out, &$consumed, $closing) {
   12:     while ($bucket = stream_bucket_make_writeable($in)) {
   13:       $bucket->data = strtoupper($bucket->data);
   14:       stream_bucket_append($out, $bucket);
   15:       $consumed += strlen($bucket->data);
   16:     }
   17:     return PSFS_PASS_ON;
   18:   }
   19: }
   20: 
   21: stream_filter_register("myfilter","debugfilter");
   22: 
   23: $fp = fopen(dirname(__FILE__)."/test.txt","w");
   24: stream_filter_append($fp, "myfilter");
   25: stream_filter_append($fp, "myfilter");
   26: stream_filter_append($fp, "myfilter");
   27: fwrite($fp, "This is a test.\n");
   28: print "Done.\n";
   29: fclose($fp);
   30: // Uncommenting the following 'print' line causes the segfault to stop occuring
   31: // print "2\n";  
   32: readfile(dirname(__FILE__)."/test.txt");
   33: unlink(dirname(__FILE__)."/test.txt");
   34: ?>
   35: --EXPECT--
   36: Done.
   37: THIS IS A TEST.